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SPT7710BIG Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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SPT7710BIG Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 12 page SPT7710 8-BIT, 150 MSPS, FLASH A/D CONVERTER TECHNICAL DATA AUGUST 17, 2001 FEATURES • Metastable errors reduced to 1 LSB • Low input capacitance: 10 pF • Wide input bandwidth: 210 MHz • 150 MSPS conversion rate • Typical power dissipation: 2.2 watts APPLICATIONS • Digital oscilloscopes • Transient capture • Radar, EW, ECM • Direct RF down-conversion • Medical electronics: ultrasound, CAT instrumentation GENERAL DESCRIPTION The SPT7710 is a monolithic flash A/D converter capable of digitizing a two volt analog input signal into 8-bit digital words at a 150 MSPS (typ) update rate. For most applications, no external sample-and-hold is re- quired for accurate conversion due to the device’s narrow aperture time, wide bandwidth, and low input capacitance. A single standard –5.2 volt power supply is required for operation of the SPT7710, with nominal power dissipation of 2.2 W. A proprietary decoding scheme reduces meta- stable errors to the 1 LSB level. The SPT7710 is available in 42-lead ceramic sidebrazed DIP, surface-mount 44-lead cerquad and 46-lead PGA packages; the cerquad and PGA packages allow access to additional reference ladder taps, an overrange bit, and a data ready output. The SPT7710 is available in the indus- trial temperature range. 256 255 152 151 128 127 64 63 2 1 256 to 8-Bit Encoder ECL Latches and Buffers AGND Analog Input (Sense or Force) VEE CLK CLK VRBF Convert VRBS VR1 VR3 VRTS VRTF VR2 2 Analog Input (Force or Sense) AGND DGND VEE LINV MINV DRINV DREAD Overrange D7 MSB D6 D5 D4 D3 D2 D1 D0 LSB MSB D7 D6 D5 D4 D3 D2 D1 LSB D0 These functions are available in the PGA and cerquad packages only. Clock Buffer Preamp Comparator BLOCK DIAGRAM |
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